May 22, 2020 · GSB :- Granular sub base or GSB is a typical layer adopted in highway construction, which is laid above the subgrade and below the crust materials. Naturally available material consisting of various grades may be used for GSB, the largest grain size up to 65mm.

GSB provides a stable base that can withstand heavy loads and traffic and helps prevent the upward movement of water. WMM provides a strong, durable base that can withstand heavy loads and traffic for an extended period and is water-resistant.

Mar 26, 2020 · Wet Mix Macadam (WMM) work includes laying and compacting clean, crushed, graded aggregate and granular material premixed with water to a dense mass on a prepared GSB layer or existing pavement as per the requirement of the project.

Wet Mix Macadam consist of laying spreading and compacting of clean, crushed, well-graded granular materials on a prepared and approved Granular sub-Base. The material is well mixed with water and rolled to a dense mass.

Mar 26, 2025 · Granular Sub Base (GSB) is a crucial layer in road construction that provides structural stability and load distribution. It is composed of crushed stones, aggregates, and gravel, forming a compacted base that supports upper layers like Wet Mix Macadam (WMM) and Bituminous Concrete (BC).

Granular Sub Base is a layer in the road foundation just above the compacted sub-grade layer. GSB or granular sub base prevents capillary water from rising; its particle size is so designed that the capillary action stops and cannot go beyond the GSB layer.

Mar 14, 2023 · This is where Granular Sub Base (GSB) and Wet Mix Macadam (WMM) come into play. In this comprehensive guide, we will explore what GSB and WMM are, their uses, and their benefits.

WBM (Water Bound Macadam) conventional method and WMM (Wet Mix Macadam) modern technology- are base course layers for Pavement/Road design.

Jul 21, 2023 · World Class Maintenance (WCM) is a strategy used to improve the production cycle, and increase manufacturing quality and effectiveness levels, always targeting better results and time optimization. The method should be implemented in several sectors of a company, as it requires an alignment between areas to be successful.

Compared to other direct liquid processes, Wet Compression Molding (WCM) enables faster cycle times, and thus higher productivity. The main automotive application is for structural parts of the body-in-white, such as spars.